Some users experienced an issue where they could not connect anymore to their console with Android 5.
This issues is caused by the new network system:
When Android detects that there is no internet connection available via WiFi it automatically uses the mobile data connection.
To fix this issue you have to disable your mobile data connection when using Mixing Station on an Android 5 device.
It is not possible to add an automatic "data on/off" function to Mixing Station as Android does not provide an API to do so.